Home / 7,120.53-10,680.79-4,657.42

Finding the Fourth Proportional to 7,120.53, 10,680.79 and 4,657.42

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Solution

The fourth proportional to 7,120.53, 10,680.79 and 4,657.42 is: 6,986.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.53 : 10,680.79 = 4,657.42 : x
  2. Step 2: Convert to fraction form
    7,120.53/10,680.79 = 4,657.42/x
  3. Step 3: Cross multiply
    7,120.53x = 10,680.79 × 4,657.42
  4. Step 4: Simplify right side
    7,120.53x = 49,744,899.49
  5. Step 5: Solve for x
    x = 49,744,899.49/7,120.53
  6. Step 6: Final answer
    x = 6,986.13

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.